Dinner knife



FIG. 1 is a perspective view of a dinner knife showing my new design;

FIG. 2 is a side elevational view, the opposite side being substantially the same in appearance;

FIG. 3 is a top plan view;

FIG. 4 is a bottom plan view;

FIG. 5 is an end elevational view of the righthand end; and

FIG. 6 is an end elevational view of the lefthand end. 

The ornamental design for a dinner knife, as shown. 